Update runtime files
diff --git a/runtime/doc/windows.txt b/runtime/doc/windows.txt
index 2f60835..79d00a7 100644
--- a/runtime/doc/windows.txt
+++ b/runtime/doc/windows.txt
@@ -1,4 +1,4 @@
-*windows.txt* For Vim version 8.2. Last change: 2021 Nov 29
+*windows.txt* For Vim version 8.2. Last change: 2022 Jan 08
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -146,7 +146,7 @@
the filler characters.
==============================================================================
-3. Opening and closing a window *opening-window* *E36*
+3. Opening and closing a window *opening-window*
CTRL-W s *CTRL-W_s*
CTRL-W S *CTRL-W_S*
@@ -246,6 +246,10 @@
Note that the 'splitbelow' and 'splitright' options influence where a new
window will appear.
+ *E36*
+Creating a window will fail if there is not enough room. Every window needs
+at least one screen line and column, sometimes more. Options 'winminheight'
+and 'winminwidth' are relevant.
*:vert* *:vertical*
:vert[ical] {cmd}